The prediction of maximal lactate steady state via onset blood lactate accumulation by incremental exercise test in the young trained tyclists

The aim of this study was to predict the maximal lactate steady state via onset blood lactate accumulation by incremental exercise test in the young trained cyclists. Nine cyclists volunteered to participate in this study. For each subject determined workload corresponding to onset blood lactate accumulation in the incremental exercise test. After that subjects performed several 30-min constant load tests for determination maximal lactate steady state. The first workload for constant load test was the workload corresponding to lactate threshold in incremental exercise test. The results demonstrated that there were significant correlation between workload corresponding onset blood lactate accumulation and maximal lactate steady state (250. 22 ± 18. 79 vs. 250. 67 ± 16. 97 watt) (r=979، P<0. 001)، between blood lactate concentration and mean blood lactate 10th، 20th and 30th minutes (r=0. 736، P<0. 037)، but there was no correlation between heart rate onset blood lactate accumulation and maximal lactate steady state (r=0. 650، P<0. 058) (4. 03 ± 0. 01 vs. 4. 25 ± 0. 09 mmol.، and 182 ±5. 52 vs. 183. 89 ± 3. 62 bpm). The regression equation to determine maximal lactate steady state is (Watt. MLSS= 0. 87×Watt. OBLA+ 32. 14). Thus the results of this study shown that there is a good correlation between workload corresponding to onset blood lactate accumulation and maximal lactate steady state and so this equation can predict maximal lactate steady state by single incremental test in athletics.